Customized Prepainted Steel China Factory
Prepainted steel are produced with galvanized or Aluzinc substrates for roofing and construction. Witop provides reliable bulk supply solutions.
Prepainted Steel Coil Series
Our prepainted steel series includes PPGI and PPGL coils with durable color coating and stable substrate quality. Designed for roofing, wall cladding and industrial applications, our products offer consistent surface finish and reliable corrosion resistance.
Witop supports customized thickness, color options and flexible MOQ to meet project-based and bulk procurement needs. With professional export packaging and third-party inspection available, we help distributors and manufacturers secure stable long-term supply.
Why Choose Witop Prepainted Steel for Coastal Markets
Witop prepainted steel combines durable color coating with strong corrosion protection, making it suitable for coastal and high-humidity environments. Engineered with stable substrate quality and controlled paint systems, our products provide long-lasting performance in demanding construction applications.
We offer tailored specifications, flexible order quantities and professional export support to ensure reliable supply for contractors and distributors.
Prepainted Steel Applications
Prepainted steel is widely used in roofing systems, wall cladding and prefabricated buildings requiring durable color coating and corrosion resistance.
PPGI steel coils are ideal for roofing sheet manufacturing, roll forming production and light steel structures in construction projects.
PPGL steel is applied in industrial warehouses, agricultural buildings and coastal construction where long-term weather resistance is required.
Color coated steel is commonly used for sandwich panels, ceiling systems and decorative exterior panels in commercial and residential buildings.
Curved metal roofing usually refers to metal roof panels that are bent or rolled into an arch or radius for canopies, warehouses, walkways, modern homes, barrel roofs, and architectural projects.
Prepainted Steel Advantages
High-quality paint system ensures strong adhesion, color consistency and long-term weather resistance.
Available with galvanized (PPGI) or aluzinc (PPGL) base metal for enhanced corrosion protection
Multiple RAL colors, thickness ranges and coating systems to meet different project requirements.
Smooth surface and controlled coating thickness support roll forming and panel fabrication.
Professional seaworthy packing reduces damage and moisture risk during shipment.
Flexible MOQ, fast quotation and third-party inspection available for global distributors and manufacturers.
Prepainted Steel Coating Layer Structure
Surface Treatment Type
| Item Name | Feature |
| Pattern | decorative, high-definition designsโsuch as Woodgrain, grass, marble, brick, camouflage, flowers, traffic sign or at your request |
| Embossed | superior durability, anti-slip properties, and enhanced corrosion resistance |
| Wrinkle / Matt | a unique, textured, and low-gloss surface designed for superior durability and aesthetics |
| PVC Film | superior durability, high corrosion resistance, and aesthetic versatility |
| Regular | High durability, varied colors, and excellent formability for construction |
Packaged Type & Details
Specification
| Parameter | Specification |
| Thickness | 0.12โ1.5 mm |
| Width | 600โ1250 mm |
| Substrate | GI / GL |
| Paint System | PE / SMP / HDP / PVDF |
| Top Coating | 10โ25 ฮผm |
| Back Coating | 5โ20 ฮผm |
| Color | RAL Standard Colors |
| Coil Weight | 3โ8 MT |
| Standard | ASTM A755 / EN 10169 |
Prepainted Steel Coil Work Flow
Prepainted Steel FAQ
Prepainted steel refers to steel coils coated with a protective paint system on galvanized (PPGI) or aluzinc (PPGL) substrates. It provides corrosion resistance and decorative color finish for roofing and construction applications.
PPGI uses galvanized steel as the base metal, while PPGL uses aluzinc steel. PPGL generally offers better corrosion resistance, especially in coastal and high-humidity environments.
Common paint systems include PE (Polyester), SMP (Silicone Modified Polyester), HDP and PVDF. The selection depends on project environment, durability requirements and budget.
Yes. Prepainted steel coils are widely used in roll forming machines to produce roofing sheets and wall panels. Stable coating adhesion ensures smooth forming without cracking or peeling.
The service life depends on coating system and environment. Under normal conditions, PE systems can last 10โ15 years, while PVDF systems offer longer durability in harsh climates.
Yes. Witop supports customized RAL colors, thickness options and third-party inspection such as SGS or BV to meet international procurement standards.
